Hugo van Woerden (b. 1926) was professor of astronomy in Groningen with a main interest in neutral hydrogen in galaxies. He has been very active in popularizing astronomy and received a Royal Medal "Ridder in de Orde van de Nederlandse Leeuw" in 1992. The citation was prepared by U. Schwarz.

NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)